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Note 6 - Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2026 | Feb. 11, 2026 | Jun. 08, 2025
Common Stock, Dividends, Per Share, Declared (in dollars per share) | $ 0.12 |  |
Common Stock Shares Issued Not Disclosed | true |  |
Share Repurchase Program Authorized June 8, 2025 [Member] |  |  |
Share Repurchase Program, Authorized, Amount |  | $ 2,000 | $ 1,000
Treasury Stock, Shares, Acquired (in shares) | 4,424,056 |  |
Treasury Stock, Value, Acquired, Cost Method | $ 125 |  |
Share Repurchase Program, Remaining Authorized, Amount | $ 1,225 |  |

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